Construction block



FIG. 1 is a perspective view of a construction block showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is an end elevational view thereof; and,

FIG. 7 is an opposite end elevational view thereof. 

The ornamental design for a construction block, as shown and described. 